Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e572063f69f46ad…

MALICIOUS

PDF

38.6 KB Created: 2021-05-10 12:04:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ee1ff440e49b12f49abd0fc06991fd0f SHA-1: 4becb9a99618cf0616e5919ff4abc08aaea5ee4e SHA-256: 5e572063f69f46ad3123e54ec4641c2de8c475b15ba5bb87426b337e7b9f7417
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a prominent link to a 'coin master free attack hack' generator, which is a common lure for phishing and malware distribution. The heuristic firings indicate it's a fake CAPTCHA or human verification prompt, designed to trick users into executing commands or downloading further payloads. The document body, though heavily obfuscated, contains text related to the lure and the malicious URL.

Machine Learning

  • Nyx PDF Classifier clean score 0.0127

Heuristics 6

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/coin-master-free-attack-hack-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003395.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3395 25668 bytes
SHA-256: 026d488d15e9bd4ac1a2b460604d4bba0a2c823692aaff958f493df954c956c5
font_01_sfnt_off00006cc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC4 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7675 17880 bytes
SHA-256: 64cbdad4b5c3b3a37694725247404ca4617731c1cde232b85c3c0be6b95e7409

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